Step-Up SIP Calculator

Most people's income rises every year — a step-up SIP raises your instalment to match. Enter your starting SIP and the yearly increase to see how much difference it makes.

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How to use this calculator

  1. Enter starting monthly investment
  2. Enter yearly increase — How much you raise the instalment each year. 10% means ₹10,000 becomes ₹11,000.
  3. Enter investment period
  4. Enter expected annual return
  5. Read the result — it updates as you type.

The formula used

Balancenext month = (Balance + Instalment) × (1 + i)  ·  Instalment × (1 + s) every 12 months

i
Monthly return = annual return ÷ 12 ÷ 100
s
Yearly step-up as a decimal (10% = 0.10)

A step-up SIP has no tidy single-line formula, because the instalment changes every twelve months. So this calculator does the honest thing and simulates it month by month: add the instalment, grow the balance, and once a year increase the instalment.

You can verify it easily — set the yearly increase to 0% and the answer matches the standard SIP Calculator exactly.

Worked example

Start at ₹10,000 a month, increase by 10% each year, for 15 years at 12%.

  • Year 1 instalment₹10,000 a month
  • Year 2 instalment₹11,000 a month
  • Year 3 instalment₹12,100 a month
  • Year 15 instalment₹37,975 a month
  1. Each month: balance = (balance + that year's instalment) × 1.01
  2. After 180 months the balance is about ₹86.8 lakh, from ₹38.1 lakh invested
  3. A flat ₹10,000 SIP over the same period gives about ₹50.5 lakh, from ₹18 lakh invested

The yearly step-up adds roughly ₹36.4 lakh to the final corpus — for an instalment that only ever rises in line with a typical salary increase.

Why a step-up SIP works so well

A flat SIP quietly shrinks in real terms. ₹10,000 a month feels significant today and trivial in fifteen years, because your salary grew and prices rose. A step-up SIP simply keeps your investing in step with your life.

The two forces working together

Each increase is small — ₹1,000 more in year two. But every increase compounds for all the remaining years, and the increases themselves compound on each other. That is why a 10% annual step-up can add more than half again to your final corpus.

Choosing your step-up rate

  • 5% — cautious, roughly keeps pace with inflation.
  • 10% — a typical annual increment for a salaried person.
  • 15%+ — ambitious; make sure it is sustainable, because stopping a SIP hurts more than never starting a big one.

Setting it up in real life

Many fund houses and platforms support an automatic annual top-up, so you can set the percentage once. If yours does not, put a reminder in your calendar for the month you normally get an increment.

Tips and common mistakes

Getting more out of it

  • Match the yearly increase to your typical salary increment — that way the higher instalment never feels like a sacrifice.
  • Check the final-year instalment in the table before committing. If it looks unaffordable, reduce the step-up now rather than abandoning it later.

Mistakes to avoid

  • Setting a step-up you cannot sustain. Stopping a SIP partway does more damage than starting with a smaller increase.
  • Assuming the increase applies from year one — the first year uses your starting amount, and the first rise happens in year two.
  • Comparing the result with a flat SIP without noticing you also invested considerably more of your own money.

Frequently asked questions

What is a step-up SIP?

A SIP where the monthly amount increases by a set percentage every year. It is also called a top-up SIP. Everything else works exactly like a normal SIP.

Is a step-up SIP better than a normal SIP?

It builds a larger corpus because you invest more — that part is arithmetic, not magic. Whether it is better for you depends on whether the rising instalment stays comfortable.

Can I stop or reduce the increase later?

Usually yes. Most platforms let you modify or cancel a top-up instruction. Check with your fund house before assuming.

Does the step-up apply from the first year?

No. The first year uses your starting amount; the first increase happens at the start of year two. This calculator follows that convention.

Should the step-up match inflation or my salary?

Matching inflation (about 5–6%) preserves your real investing power. Matching your salary growth (often 8–10%) actually increases it. Either is a sound rule.

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Disclaimer: These calculators are for educational and informational purposes only. Results are estimates based on the inputs provided and should not be considered financial, investment, tax, or legal advice.